525121224 has 64 divisors (see below), whose sum is σ = 1350051840. Its totient is φ = 170126400.

The previous prime is 525121199. The next prime is 525121231. The reversal of 525121224 is 422121525.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 525121194 and 525121203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168787 + ... + 171869.

It is an arithmetic number, because the mean of its divisors is an integer number (21094560).

Almost surely, 2^525121224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525121224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675025920).

525121224 is an abundant number, since it is smaller than the sum of its proper divisors (824930616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525121224 is a wasteful number, since it uses less digits than its factorization.

525121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3286 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 525121224 is about 22915.5236466462. The cubic root of 525121224 is about 806.7764091146.

Adding to 525121224 its reverse (422121525), we get a palindrome (947242749).

The spelling of 525121224 in words is "five hundred twenty-five million, one hundred twenty-one thousand, two hundred twenty-four".